Controller States and Status

A controller status of Active/Standby is the normal operating status. This insures that the array is running in a optimal state for full redundancy in the event that a controller takeover is required. If controllers are not in this state, contact HPE Support for further diagnoses.

Active

The controller is actively responding to read/write operations from the host or hosts.

Standby

The controller is powered on, synchronizing mirrored data to the active controller, and available for controller takeover, should it be required.

Solo

The controller is powered on, responding to reads/writes but there is no standby controller to takeover if a controller takeover is required. If this controller fails, the array will be non-operational. (A controller will be in Solo mode if the 2nd controller is in one of the following states: Unknown, Stale.)

Unknown

The controller is not powered up or is in the process of rebooting. During this time the active controller can not communicate to the controller therefore it does not know which state it is in.

Stale

The controller has completed the bootup process but is not actively synchronizing or mirroring data with the active controller.